jill biden. joe biden, not exactly a lame duck. he hasn't ruled out that he will run in four years. >> he had, in addition to members of cabinet and the governors, he had the president of the afl-cio and a number of other people. i guess 2016 is not so far away. but really, the focus yesterday, was on joe biden and his incredible career in politics. and all of the amazing things he's accomplished, in the united states senate, as well as the work he's done for this president, as well. >> looking, again. secretary of state. if joe biden would run, he would be the oldest at an inauguration. the average age is about 55. again, dr. jill biden. >> as dr. biden takes her seat, she said all of the cabinet is in attendance. except for the secretary delegated not to attend the ceremony today. >> we can tell you, by the way, we now know what the president said when he walked into the capitol. he said, i missed this place. it looks great. a quick word from jonathan karl, white house correspondent, as you look out from the platform. >> reporter